Built for reliability in residential and commercial applications

significantly reducing the risk of flooded starts and internal mechanical damage

OEM Compatibility: Specifically designed as a direct replacement TXV for Carrier 50BA and 40RT units

this assembly is the factory-designated replacement for several legacy part numbers

York S1-024-35778-000 Pressure Switch 319852-301 Built for reliability in residentialThe York S1 024 35778 000 Pressure Switch is a critical safety component designed for precise monitoring of inducer blower performance in high efficiency furnace systems. Calibrated at a . 6" WC set point, this OEM HVAC air pressure switch ensures that the draft inducer is exhausting combustion gases correctly before the ignition sequence initiates. For service technicians, identifying a failing switch often involves troubleshooting lockout codes